Polka Dot in Cranberry Opalescent (January 1955-July 1956) Cranberry Opalescent Polka Dot is glassware with a Cranberry background that was interwoven with tiny uniformly spaced French Opalescent dots. Nineteen pieces in this pattern were produced. This squat vase is 7" in diameter and 3.5" high -- in mint condition! Any questions, please ask.